Among the following groupings which represents the collection of isoelectronic species?

Options

A. `NO^(+), C_(2)^(2-) , O_(2), CO`
B. `N_(2),C_(2)^(2-), CO,NO`
C. `CO, N_(2),CN^(-), C_(2)^(2-)`
D. `NO,CN^(-),N_(2),O_(2)^(-)`

Answer

C

Explanation

(C) contains all isoelectronic species.